Laboratory Services

Screen4 is able to provide UKAS accredited fully validated Chain of Custody Laboratory testing of urine, oral fluid and hair. There are two types of Laboratory test available; a laboratory 'screening' and a laboratory 'confirmation' test.

Screening Test

Immunoassay screening is not a conclusive test but gives an indication as to whether a test sample is positive or negative for the drug group being analysed. It cannot take into account any legitimate medication taken which lies in the same group as any illegal substance.